How did the Samuel Clemens high school get it and name buffalos?

It seems you're asking about the naming of a high school and its mascot, but there's some information missing. There doesn't appear to be a high school named "Samuel Clemens" with a "buffalo" mascot.

To help me answer your question, could you please clarify the following:

* Is the school name "Samuel Clemens" correct?

* Are you sure the mascot is a buffalo?

* Do you know the location of the school?

With more information, I can help you find the answer you're looking for.